Merge "Handle Active device changed A2DP <-> Hearing Aid" into rvc-dev am: afe43da899 am: 870c2eb28a am: b0fc4d207f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12004939

Change-Id: I8df81d71b2ebc5d726d9d97029409615c47f73dd